CN2148211Y - Rolling bearing with side isolated rolling body and composite rolling bearing - Google Patents

Abstract

The utility model relates to a rolling bearing with the side isolated rolling body and the composite rolling bearing, comprising an inner ring (1), an outer ring (2), the load rolling body (3), etc. The utility model is characterized in that the utility model also comprises the side isolated rolling body (4) and the spacing ring (5) thereof, or comprises an assistant bearing (6), etc. The utility model has the advantages of small friction torque, small abrasion, small vibration, low noise, high rotary speed, long service life, strong bearing capacity, stable and reliable running, etc., and can replace a plurality of current rolling bearings. The big-size and middle-size composite rolling bearings can replace a plurality of sliding bearings of big-size and middle-size electromechanical devices, such as the sliding bearings of synchronous motors, generators, etc.

Description

Rolling bearing with side isolated rolling body and composite rolling bearing

The utility model belongs to bearing, specifically, is a kind of side separation roller rolling bearing and mother and sons' rolling bearing that can reduce sliding friction.

Rolling bearing all will make the load rolling element be isolated from each other usually.Such as, most widely used radial ball bearing adopts retainer can isolate the load rolling element effectively.But owing to the reasons such as sliding friction between the setting of retainer and it and the load rolling element, the load-carrying ability of this class bearing is subjected to certain limitation, also exists well-known such as problems such as heating, noise, wearing and tearing.Tapered roller bearing also adopts retainer, and its roller places the depression of moving-coil also can isolate the load rolling element effectively.It can bear bigger load, but its sliding friction has also limited its rotating speed then much larger than radial ball bearing.The friction torque of rolling bearing is much smaller than the friction torque of sliding bearing, yet because the load power of existing rolling bearing is less relatively, often has to again adopt sliding bearing and abandon rolling bearing for some powerful load people.

In view of the foregoing, reduce the sliding friction in the rolling bearing and to increase its load-carrying ability be important.

Air-bearing, magnetic bearing can reduce the influence of sliding friction effectively, but universality is poor, can not be widely used in to replace existing general bearing.

Japan Patent JP ［ 31 ］ 243071/86 has proposed a kind of rolling bearing (seeing Chinese patent CN87107012A), adopts intermediary's rolling element, lid, fixed guide and free ring, and friction torque is reduced; Thereafter, Chinese patent CN1042972A discloses a kind of mother and sons' bearing, adopts neutretto rolling element and positioning ring, has also overcome the influence of sliding friction.Problem is that previous patent also is provided with lid and is located at the fixed guide that covers when adopting free ring, this can prevent the displacement that intermediary's rolling element is radially possible effectively, guarantees the safe handling of bearing, but its structure and assembling more complicated; The patent in back is not established lid and fixed guide, only establishes neutretto rolling element and positioning ring, and its structure is comparatively simple, and still, under the bigger situation of heavy duty or impact load, its operating reliability is relatively poor relatively.If is that sub-rolling element revolution trajectory is located because be with female rolling element revolution trajectory, the extruding component that female rolling element produces under the load effect can not all be fed back to adjacent female rolling element by sub-rolling element, the radial component of this extruding component will be fed back to positioning ring by sub-rolling element, under the bigger situation of heavy duty or impact load, the working state that this might damage positioning ring even influence bearing; If the extruding component that female rolling element produces under the load effect all feeds back to adjacent female rolling element by sub-rolling element, then the axis of rotation of neutretto rolling element must be on the straight line that connects adjacent female rolling element axis of rotation.In both cases, the female rolling element spacing that is determined is similar to or equals the diameter of neutretto rolling element respectively.Because shape opening shape is split to what medial and lateral gradually were the band camber line with stretching respectively in the cross section between adjacent female rolling element, therefore, in case load is when the open part in (or outside) gradually produces displacement with stretching to the inside on one side than ambassador's neutretto rolling element or positioning ring, with near this sub-rolling element becomes the center symmetry sub-rolling element or the also gradually generation displacement of open part of (or inboard) then laterally of positioning ring another side with stretching.Add that in case this situation takes place, this displacement will aggravate because female rolling element pushes component always along the normal orientation effect of surface of contact.Will produce like this and rub circle, even may destroy the running of bearing.

The purpose of this utility model, aim to provide a kind of structure comparatively simple, can reduce sliding friction and also applicable to the novel bearing of heavy duty or the big situation of impact load.

The utility model is a kind of side separation roller rolling bearing and mother and sons' rolling bearing.

The side separation roller rolling bearing of this first model utility, it comprises inner ring, the outer ring, load rolling element etc., be provided with raceway at interior ring outer wall and outer ring inwall, the load rolling element can roll along inner ring raceway and outer ring raceway, this side separation roller rolling bearing, it also comprises and is arranged on adjacent load rolling element side at interval, two end part are shaped on the side separation roller of annular ditch groove and are arranged on limited ring on the annular ditch groove, at limited ring and on convergent ground, the cross section is under the common constraint at the adjacent load rolling element interface of splitting shape closing in shape of being with camber line, the side separation roller can make adjacent load rolling element keep the spacing of regulation, and side separation roller and load rolling element can be rolled.The side separation roller of this side separation roller rolling bearing can one-sidedly be arranged on the adjacent load rolling element outside or inboard at interval, but also bilateral and be not arranged on the adjacent load rolling element outside and inboard at interval each other in contact.

Mother and sons' rolling bearing of this second model utility, it comprises inner ring, outer ring, load rolling element etc., be provided with raceway at interior ring outer wall and outer ring inwall, the load rolling element can roll along inner ring raceway and outer ring raceway, these mothers and sons rolling bearing, it also comprises plurality of sub bearing and the limited ring thereof that is located in female bearing, makes the load rolling element keep the spacing of regulation also can roll.

Below, the utility model will be further described by indefiniteness embodiment in conjunction with the accompanying drawings.

Now referring to Fig. 1, Fig. 2, Fig. 3.The side separation roller rolling bearing of this first model utility, it comprises inner ring ［ 1 ］, outer ring ［ 2 ］, load rolling element ［ 3 ］ etc., be provided with raceway at inner ring ［ 1 ］ outer wall and outer ring ［ 2 ］ inwall, load rolling element ［ 3 ］ can roll along inner ring raceway and outer ring raceway, this side separation roller rolling bearing, it also comprises and is arranged at interval side of adjacent load rolling element ［ 3 ］, two end part are shaped on the side separation roller ［ 4 ］ of annular ditch groove and are arranged on limited ring ［ 5 ］ on the annular ditch groove, at limited ring ［ 5 ］ and on convergent ground, the cross section is under the common constraint at adjacent load rolling element ［ 3 ］ interface of splitting shape closing in shape of being with camber line, side separation roller ［ 4 ］ can make adjacent load rolling element ［ 3 ］ keep the spacing of regulation, and side separation roller ［ 4 ］ and load rolling element ［ 3 ］ can be rolled, and side separation roller ［ 4 ］ and limited ring ［ 5 ］ all do not contact with inner ring ［ 1 ］ or outer ring ［ 2 ］.Load rolling element ［ 3 ］ can be ball or roller, and side separation roller ［ 4 ］ is a roller.

Fig. 1 and Fig. 2 are that the one-sided master who puts the separation roller single-row radial ball bearing looks and diagrammatic side views.Fig. 3 is that the master that bilateral is put the separation roller single-row radial ball bearing looks and diagrammatic side views.Wherein, side separation roller ［ 4 ］ is a roller, and eel-like figure part can be consistent with the cooperation of load rolling element ［ 3 ］ rolling surface in the middle of it, and its two ends all are shaped on annular ditch groove.

In the embodiment shown in fig. 1, side separation roller ［ 4 ］ is arranged on the outside of adjacent load rolling element ［ 3 ］ predetermined distance, and limited ring ［ 5 ］ is nested with the outside at each side separation roller ［ 4 ］ end annular ditch groove rotationally; In order to strengthen transient equiliblium, limited ring ［ 5 ］ can also be embedded the inboard at each side separation roller ［ 4 ］ end annular ditch groove simultaneously more rotationally.

In the embodiment shown in Figure 2, side separation roller ［ 4 ］ is arranged on the inboard of adjacent load rolling element ［ 3 ］ predetermined distance, and limited ring ［ 5 ］ is embedded the inboard at each side separation roller ［ 4 ］ end annular ditch groove rotationally; In order to strengthen transient equiliblium, limited ring ［ 5 ］ can also be set in the outside of each side separation roller ［ 4 ］ end annular ditch groove simultaneously more rotationally.

In the embodiment shown in fig. 3, side separation roller ［ 4 ］ bilateral and be not arranged on adjacent load rolling element ［ 3 ］ outside and inboard at interval each other in contact, limited ring ［ 5 ］ is located at the outside of outer side separation roller ［ 4 ］ termination trench and the inboard of interior side separation roller ［ 4 ］ termination trench rotationally respectively; In order to strengthen transient equiliblium, limited ring ［ 5 ］ can also be located at the inboard of outer side separation roller ［ 4 ］ termination trench and the outside of interior side separation roller ［ 4 ］ termination trench simultaneously more rotationally respectively.

Now referring to Fig. 4.The side separation roller rolling bearing of this first model utility, in the embodiment shown in fig. 4, limited ring ［ 5 ］ is set on each side separation roller ［ 4 ］ end annular ditch groove rotationally, and in corresponding, the both sides of outer ring raceway are provided with auxiliary raceway, limited ring ［ 5 ］ can roll on auxiliary raceway, at limited ring ［ 5 ］ and on convergent ground, the cross section is under the common constraint at adjacent load rolling element ［ 3 ］ interface of splitting shape closing in shape of being with camber line, side separation roller ［ 4 ］ can make adjacent load rolling element ［ 3 ］ keep the spacing of regulation, and side separation roller ［ 4 ］ and load rolling element ［ 3 ］ can be rolled.

Now referring to Fig. 5, Fig. 6, Fig. 7.Mother and sons' rolling bearing of this second model utility, it comprises inner ring ［ 1 ］, outer ring ［ 2 ］, load rolling element ［ 3 ］ etc., be provided with raceway at inner ring ［ 1 ］ outer wall and outer ring ［ 2 ］ inwall, load rolling element ［ 3 ］ can roll along inner ring raceway and outer ring raceway, these mothers and sons rolling bearing, it also comprises plurality of sub bearing ［ 6 ］ and the limited ring ［ 5 ］ thereof that is located in female bearing, makes load rolling element ［ 3 ］ keep the spacing of regulation also can roll.

The master that Fig. 5, Fig. 6, Fig. 7 are respectively mother and sons' rolling bearing embodiment looks and diagrammatic side views.

In the embodiment shown in fig. 5, load rolling element ［ 3 ］ is a roller, and axle is made at its two ends, and the inner ring of sub-bearing ［ 6 ］ is arranged on the axle; On two sides between inner ring ［ 1 ］ and outer ring ［ 2 ］, also be provided with limited ring ［ 5 ］, each sub-bearing ［ 6 ］ outer ring of every side is fixed on the ring, equidistantly link, and make load rolling element ［ 3 ］ keep the spacing of regulation, and can roll.

In the embodiment shown in fig. 6, load rolling element ［ 3 ］ is roller or ball, particularly side separation roller roller ［ 4 ］ of separation roller roller ［ 4 ］ also is set, its rolling working surface cooperates consistent, axle is made at the two ends of separation roller roller ［ 4 ］, and the inner ring of sub-bearing ［ 6 ］ is arranged on the axle; On two sides between inner ring ［ 1 ］ and outer ring ［ 2 ］, also be provided with limited ring ［ 5 ］, each sub-bearing ［ 6 ］ outer ring of every side is fixed on the ring, equidistantly link, and make load rolling element ［ 3 ］ keep the spacing of regulation, and can roll.

In the embodiment shown in fig. 7, load rolling element ［ 3 ］ is a roller, and separation roller roller ［ 4 ］ also is set, and its rolling working surface cooperates consistent, axle is made in the end of load rolling element roller ［ 3 ］ and separation roller roller ［ 4 ］, and the inner ring of sub-bearing ［ 6 ］ is separately positioned on the axle; On two sides between inner ring ［ 1 ］ and outer ring ［ 2 ］, also be provided with limited ring ［ 5 ］, each sub-bearing ［ 6 ］ outer ring of every side is fixed on the ring, and make load rolling element roller ［ 3 ］ keep the spacing of regulation, and can roll.Separation roller roller ［ 4 ］ can also can be side separation roller roller for just putting intermediary's rolling element roller.

Mother and sons' rolling bearing of this second model utility, its sub-bearing ［ 6 ］ can be selected general small-size or miniature bearing for use, also can select jewel bearing for use sometimes.Certainly, in certain embodiments, can also be reduced to positioning hole by bundle bearing ［ 6 ］, the axle of load rolling element roller ［ 3 ］, separation roller roller ［ 4 ］ can rotate in positioning hole.

The utility model also can be provided with corresponding key, pin, hole and accessory, can use lubricant oil and lubricating fitting.The utility model can be designed to various bearings with reference to classify international standard or NBS of bearing, such as, radial bearing, radial thrust bearing, ball bearing, roller bearing, single row bearing, double row bearing etc.The utility model can be with the well known materials that comprises the high-quality elastic material, adopt tradition and advanced explained hereafter manufacturing.

Below, further illustrate operation process of the present utility model and advantage again.

Now referring to Fig. 1, Fig. 2, Fig. 3.The side separation roller rolling bearing of this first model utility, side separation roller ［ 4 ］ make load rolling element ［ 3 ］ keep the spacing of stipulating, and are retrained jointly by the interface of limited ring ［ 5 ］ and adjacent load rolling element ［ 3 ］.When bearing operation, if setting the moving-coil sense of rotation is postive direction, then load rolling element ［ 3 ］ also revolves round the sun by forward when doing reverse rotation, side separation roller ［ 4 ］ also revolves round the sun by forward and load rolling element when doing the forward rotation synchronously, and limited ring ［ 5 ］ is revolution thereupon then.The major component of moving-coil thrust load is transmitted given circle by load rolling element ［ 3 ］, the extruding component part that load rolling element ［ 3 ］ produces feeds back to adjacent load rolling element ［ 3 ］ by side separation roller ［ 4 ］ and then transmits given circle again, part then is transferred to limited ring ［ 5 ］ by side separation roller ［ 4 ］, and and then be transferred to other side separation rollers ［ 4 ］, load rolling element ［ 3 ］ and inside and outside circle raceway by limited ring ［ 5 ］ again, realize transient equiliblium with this.Because side separation roller ［ 4 ］ side is in adjacent load rolling element ［ 3 ］ side at interval, near itself and adjacent load rolling element ［ 3 ］ touching position interface is the shape of splitting of band arc, in case load than ambassador's side separation roller ［ 4 ］ or limited ring on one side to the inside the open part of (for interior side separation roller) or the outside (for outer side separation roller) gradually stretch the generation displacement time, with near this side separation roller ［ 4 ］ becomes the center symmetry side separation roller ［ 4 ］ or the mouth convergent ground generation displacement of (for interior side separation roller) or inboard (for outer side separation roller) then laterally of limited ring another side, constitute reverse feedback with this.Vice versa.Obviously, this degenerative transient equiliblium mode has guaranteed the stable of system works, has avoided issuable the rubbing of existing intermediary rolling element and positioning ring to enclose or disorder, and simple in structure.Certainly, because limited ring ［ 5 ］ except carrying the centrifugal action, also will carry certain lateral extrusion component, therefore to suitably strengthen the size and the intensity of limited ring ［ 5 ］.For being used for inner ring ［ 1 ］ rotation, outer ring ［ 2 ］ fixing outer side separation roller rolling bearing, when the bearing high speed rotating, because action of centrifugal force, to make side separation roller ［ 4 ］ leave slightly load rolling element ［ 3 ］ the band arc split the shape interface, realized slight contact or non-contacting isolation.This can further reduce the rolling friction of side separation roller ［ 4 ］ and load rolling element ［ 3 ］.Interior side separation roller rolling bearing is to last similar, but because action of centrifugal force, and interior side separation roller ［ 4 ］ is more closely with load rolling element ［ 3 ］ that rolling contacts, and has reduced the load of aforesaid built-in limited ring ［ 5 ］.Bilateral is put stability and the reliability that the separation roller rolling bearing then can further improve rolling bearing.Compare with intermediary separation roller rolling bearing, this side separation roller rolling bearing is except having above-mentioned advantage, also because of under the condition of identical suitable spacing, the diameter of side separation roller ［ 4 ］ can be big than intermediary's rolling element diameter, reduce the speed of autorotation of separation roller ［ 4 ］, therefore can reduce wearing and tearing; Under the condition of same separation rolling element diameter, then reduced the spacing of adjacent load rolling element, thereby can improve the load-carrying ability of bearing.Size and intensity as for limited ring ［ 5 ］, as long as suitable increasing then can, because living load mainly is to be carried by load rolling element ［ 4 ］, limited ring ［ 5 ］ will carry very big centrifugal force originally, and uneven impact load is the part component, and it can obtain transient equiliblium by degeneration factor.

Now referring to Fig. 4.Because limited ring ［ 5 ］ is nested with on the end annular ditch groove of side separation roller ［ 4 ］, and can on corresponding auxiliary raceway, roll, can make the radial component of extruding component directly transmit given circle, thereby can improve design load and stability by limited ring ［ 5 ］.

Now referring to Fig. 5, Fig. 6, Fig. 7.Mother and sons' rolling bearing of this second model utility, its first embodiment is provided with sub-bearing ［ 6 ］ and limited ring ［ 5 ］, makes load rolling element roller ［ 3 ］ keep the spacing of regulation.In the running, the moving-coil thrust load transmits given circle by load rolling element roller ［ 3 ］, its extruding component then is transferred to limited ring ［ 5 ］ by sub-bearing ［ 6 ］, and and then be transferred to other sub-bearing ［ 6 ］, load rolling element roller ［ 3 ］ and inside and outside circle raceway by limited ring ［ 5 ］ again, realize transient equiliblium with this.Also arranging bearing moving-coil sense of rotation is postive direction, then load rolling element roller ［ 3 ］ is done the forward revolution when doing reverse rotation, its rotation is to be supporting with the sub-bearing ［ 6 ］ that is located on the limited ring ［ 5 ］, and its axis of rotation overlaps with the axis of rotation of corresponding sub-bearing ［ 6 ］; Simultaneously, limited ring ［ 5 ］ and sub-bearing ［ 6 ］ thereof are done the synchronous forward revolution with load rolling element roller ［ 3 ］.Above-mentioned transmission process all is the rolling transmission, has therefore avoided the sliding friction of retainer.Because separation roller is not set, this can reduce the spacing of adjacent load rolling element roller ［ 3 ］, and this limited ring ［ 5 ］ intensity is big, therefore can improve design load greatly.

Second embodiment of mother and sons' rolling bearing and first embodiment's difference are that it also is provided with separation roller roller ［ 4 ］, separation roller roller ［ 4 ］ is carried out by sub-bearing ［ 6 ］ by limited ring ［ 5 ］ spacing, thereby make load rolling element ［ 3 ］ keep the spacing of regulation.In order to prevent to rub circle, separation roller ［ 4 ］ is side preferably.The fundamental component of extruding component by separation roller ［ 4 ］ be transferred to adjacent load rolling element ［ 3 ］ and and then be transferred to and decide circle, the fraction component of extruding component is transferred to positioning ring ［ 5 ］ by separation roller ［ 4 ］, sub-bearing ［ 6 ］.Reduce the load that sub-bearing ［ 6 ］ and limited ring ［ 5 ］ bear thus, and can improve stability.

The 3rd embodiment of mother and sons' rolling bearing is provided with load rolling element roller ［ 3 ］ and separation roller roller ［ 4 ］ simultaneously, and makes it keep the spacing of regulation by corresponding sub-bearing ［ 6 ］ and limited ring ［ 5 ］ respectively.In the running, the moving-coil thrust load transmits given circle by load rolling element roller ［ 3 ］, and its extruding component is transferred to adjacent load rolling element roller ［ 3 ］ by separation roller ［ 4 ］, also is transferred to limited ring ［ 5 ］ by sub-bearing ［ 6 ］, all transmit given circle raceway at last, realize transient equiliblium with this.Agreement bearing moving-coil sense of rotation is a postive direction, then load rolling element roller ［ 3 ］ is done the forward revolution when doing reverse rotation, separation roller roller ［ 4 ］ is done the synchronous forward revolution with load rolling element roller ［ 3 ］ when doing the forward rotation, limited ring ［ 5 ］ and sub-bearing ［ 6 ］ are also done the synchronous forward revolution, and do reverse rotation with the inner ring of the corresponding sub-bearing of load rolling element roller ［ 3 ］ ［ 6 ］, do the forward rotation with the inner ring of the corresponding sub-bearing of separation roller ［ 4 ］ ［ 6 ］.Separation roller ［ 4 ］ can just be put, also can side.

Side separation roller rolling bearing of the present utility model and mother and sons' rolling bearing, have that friction torque is little, wearing and tearing are little, vibration is little, noise is low, rotating speed is high, the life-span is long, bearing capacity is strong and the advantage of stable and reliable operation, be expected to replace some existing rolling bearing, especially large and medium-sized mother and sons' rolling bearing is expected to replace some sliding bearing and is used for large and medium-sized electromechanical equipment such as sliding bearing of synchronous motor and generator etc.

Claims (10)

1, a kind of side separation roller rolling bearing, it comprises inner ring [1], outer ring [2], load rolling element [3] etc., be provided with raceway at inner ring [1] outer wall and outer ring [2] inwall, load rolling element [3] can roll along inner ring raceway and outer ring raceway, it is characterized in that, it also comprises and is arranged at interval side of adjacent load rolling element [3], two end part are shaped on the side separation roller [4] of annular ditch groove and are arranged on limited ring [5] on the annular ditch groove, at limited ring [5] and on convergent ground, the cross section is under the common constraint at adjacent load rolling element [3] interface of splitting shape closing in shape of being with camber line, side separation roller [4] can make adjacent load rolling element [3] keep the spacing of regulation, side separation roller [4] rolls with load rolling element [3], and side separation roller [4] and limited ring [5] all do not contact with inner ring [1] or outer ring [2].

2, side separation roller rolling bearing according to claim 1: it is characterized in that, the one-sided outside that is arranged on adjacent load rolling element ［ 3 ］ predetermined distance of side separation roller ［ 4 ］, limited ring ［ 5 ］ is nested with the outside at each side separation roller ［ 4 ］ end annular ditch groove rotationally with putting.

3, side separation roller rolling bearing according to claim 1, it is characterized in that, the one-sided inboard that is arranged on adjacent load rolling element ［ 3 ］ predetermined distance of side separation roller ［ 4 ］, limited ring ［ 5 ］ is nested with the inboard at each side separation roller ［ 4 ］ end annular ditch groove rotationally with putting.

4, side separation roller rolling bearing according to claim 1, it is characterized in that, side separation roller ［ 4 ］ bilateral and be not arranged on the outside and the inboard of adjacent load rolling element ［ 3 ］ predetermined distance each other in contact, limited ring ［ 5 ］ are established respectively rotationally and are nested with the outside of side separation roller ［ 4 ］ end annular ditch groove and the inboard of interior side separation roller ［ 4 ］ end annular ditch groove outside.

5, side separation roller rolling bearing according to claim 1, it is characterized in that, limited ring ［ 5 ］ can be set on each side separation roller ［ 4 ］ end annular ditch groove rotationally, and auxiliary raceway being set in the both sides of corresponding inside and outside circle raceway, limited ring ［ 5 ］ can roll on auxiliary raceway.

6, a kind of mother and sons' rolling bearing, it comprises inner ring ［ 1 ］, outer ring ［ 2 ］, load rolling element ［ 3 ］ etc., be provided with raceway at inner ring ［ 1 ］ outer wall and outer ring ［ 2 ］ inwall, load rolling element ［ 3 ］ can roll along inner ring raceway and outer ring raceway, it is characterized in that, it also comprises plurality of sub bearing ［ 6 ］ and the limited ring ［ 5 ］ thereof that is located in female bearing, makes load rolling element ［ 3 ］ keep the spacing of regulation.

7, mother and sons' rolling bearing according to claim 6, it is characterized in that, load rolling element ［ 3 ］ is a roller, axle is made at its two ends, and the inner ring of sub-bearing ［ 6 ］ is arranged on the axle, also is provided with limited ring ［ 5 ］ on two sides between inner ring ［ 1 ］ and outer ring ［ 2 ］, each sub-bearing ［ 6 ］ outer ring of every side is fixed on the ring, equidistantly link, and make load rolling element ［ 3 ］ keep the spacing of regulation, and can roll.

8, mother and sons' rolling bearing according to claim 6, it is characterized in that, load rolling element ［ 3 ］ is roller or ball, particularly side separation roller roller ［ 4 ］ of separation roller roller ［ 4 ］ also is set, its rolling working surface cooperates consistent, axle is made at the two ends of separation roller roller ［ 4 ］, the inner ring of sub-bearing ［ 6 ］ is arranged on the axle, on two sides between inner ring ［ 1 ］ and outer ring ［ 2 ］, also be provided with limited ring ［ 5 ］, each sub-bearing ［ 6 ］ outer ring of every side is fixed on the ring, equidistantly link, and make load rolling element ［ 3 ］ keep the spacing of regulation, and can roll.

9, mother and sons' rolling bearing according to claim 6, it is characterized in that, load rolling element ［ 3 ］ is a roller, separation roller roller ［ 4 ］ also is set, its rolling working surface cooperates consistent, axle is all made in the end of load rolling element roller ［ 3 ］ and separation roller roller ［ 4 ］, the inner ring of sub-bearing ［ 6 ］ is separately positioned on the axle, on two sides between inner ring ［ 1 ］ and outer ring ［ 2 ］, also be provided with limited ring ［ 5 ］, each sub-bearing ［ 6 ］ outer ring of every side is fixed on the ring, and make load rolling element roller ［ 3 ］ keep the spacing of regulation, and can roll.

10, according to claim 6 or 7 or 8 or 9 described mother and sons' rolling bearings, it is characterized in that sub-bearing ［ 6 ］ can be reduced to positioning hole, the axle of load rolling element roller ［ 3 ］, separation roller roller ［ 4 ］ can rotate in positioning hole.

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